have (got) (one's) number
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have (got) (one's) number
To understand or know someone or something well enough to anticipate what they will do. That team is impossible to beat—they've had our number since 2006! Oh, don't worry, I've got his number—he's a typical brat.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
have someone's number
If you have someone's number, you understand what kind of person they are, and so you know how to deal with them. Oh, don't worry — I won't let him cheat me. I've got his number.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
have someone's number
understand a person's real motives or character and thereby gain some advantage. informalFarlex Partner Idioms Dictionary © Farlex 2017
have somebody’s ˈnumber
(informal) really understand what type of person somebody is and what they plan to do: Don’t worry, I’ve got his number. I shall be very careful in any business I do with him. ♢ You can’t fool me, you know. I’ve got your number.Farlex Partner Idioms Dictionary © Farlex 2017